Question

JAWAB BESERTA CARANYA!
persamaan grs lrs yg melalui titik (-2, 3) dan sejajar dg y= 2x -6 adl..
a) 2x-y +7 = 0
b) 2y-x -7 = 0
c) -2x +y +7 =0
d) 2y -x +7 =0

Answer 1

Gradien garis y=2x-6 adalah 2
rumus = y-y₁=m(x-x₁)
             y-3 = 2(x-(-2))
             y-3 = 2(x+2)
             y-3 = 2x+4
             0 = 2x-y+7
jawabannya = a

Answer 2

Y-3=2(x-(-2))
y-3=2(x+2)
y-3=2x+4
y=2x+4+3
y=2x+7
=2x-y+7=0